C1111133313331323223313331333133313331333232233133112111112133313123232311321   >>    C111113331333132322331333133313331333133323223313311211111213331312323231132   <<    C1111133313331323223313331333133313331333232233133112111112133313123232311323   >>      C1111133313331323223313331333133313331333232233133112111112133313123232311322   >>